structure where a wall or building narrows abruptly
setting off的用法和样例:
例句
By now, a rocket will have set off on its35 million mile trip to Mars and scientists must be waiting anxiously for the results. 此刻,一枚火箭可能已经出发,踏上飞向火星的3,500万英里的旅程,科学家们一定在焦急地等待着结果。
Setting off firecrackers is seen not merely as a nuisance, but also as a big threat to man's life and property. 燃放鞭炮不仅仅被看作讨厌的事,而且还被认为是对人的生命财产的严重威胁。